3G Hemi fuel: EFI vs Carb

just a small question bacause it seems to go kinda rough here. Do you guys have no problems with officials, car inspections and such thinks? Can you do what you wanna do to your cars??
The officials here would never make my car street legal. Even with a carbed Hemi I have a cheater now. That was my main reason. Have a modern engine, perfect for long fast Autobahn rides. I'd love to go injected with my 6.1 but it's simply not allowed... :-( Or I have to pay 2000 USD taxes every year like for a modern car.....
But I'm on the other side of the atlantic... LOL not your prob....